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coredump: add coredump_skip() helper

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Link: https://lore.kernel.org/20250612-work-coredump-massage-v1-24-315c0c34ba94@kernel.org
Signed-off-by: Christian Brauner <brauner@kernel.org>
This commit is contained in:
Christian Brauner
2025-06-12 15:25:38 +02:00
parent 9dd88f3626
commit da9029b47d
1 changed files with 14 additions and 5 deletions
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19
fs/coredump.c
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@@ -1079,6 +1079,18 @@ static void coredump_cleanup(struct core_name *cn, struct coredump_params *cprm)
coredump_finish(cn->core_dumped);
}
static inline bool coredump_skip(const struct coredump_params *cprm,
const struct linux_binfmt *binfmt)
{
if (!binfmt)
return true;
if (!binfmt->core_dump)
return true;
if (!__get_dumpable(cprm->mm_flags))
return true;
return false;
}
void vfs_coredump(const kernel_siginfo_t *siginfo)
{
struct cred *cred __free(put_cred) = NULL;
@@ -1086,7 +1098,7 @@ void vfs_coredump(const kernel_siginfo_t *siginfo)
struct core_state core_state;
struct core_name cn;
struct mm_struct *mm = current->mm;
struct linux_binfmt * binfmt;
struct linux_binfmt *binfmt = mm->binfmt;
const struct cred *old_cred;
int argc = 0;
struct coredump_params cprm = {
@@ -1104,10 +1116,7 @@ void vfs_coredump(const kernel_siginfo_t *siginfo)
audit_core_dumps(siginfo->si_signo);
binfmt = mm->binfmt;
if (!binfmt || !binfmt->core_dump)
return;
if (!__get_dumpable(cprm.mm_flags))
if (coredump_skip(&cprm, binfmt))
return;
cred = prepare_creds();